i have a linksys BEFW11S4 router that i am pretty sure is malfunctioning due to overheating. when it gets pretty hot, whenever i connect to a CSS server it drops my connection and its lights go berserk... later on the red diagnostic light just stays on permenantly, no matter what i do.

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What is even more annoying, that router suddenly drops the connection even when I'm simply looking at the Nbr forums, or any other simple web page.

Are the problems really caused by Overheating, because I've never heard of such a thing before, but my router and Power Supply adapter so get very hot.

BTW I have a Belkin F5D7633-4 Router

Any Ideas on how to fix the problem. Any help would be greatly appreciated.

I have never heard of a router overheating, an xbox 360 maybe =)) but not a router. Have you tried to use the the internet connection without the router for a day or two? Try that and don't forget to use a firewall if you don't because you may expose yourself during testing this way.

And it's kind of annoying. The router seems to get very hot very hot even when I am not using the Internet. is it something to do with the amount of data transfer This only started happening when I switched ISP for a faster connection, from 512KB/s to 8MB/s.

Yes some router can over heat when put under extreme loads, but it's mainly related to the older wireless routers in particular Belkin. But it can happed to all.
See if you can open the unit up, and run without the top on and use a small fan to confirm it has sufficent cooling.

This router is based on Broadcom BCM6348 CPU probably 256MHz.
I had Broadcom based router once and it was hot as hell when overclocked to 240MHz (I just gotta overclock... )

I had to open it and use two copper radiators (TSOP RAM type) one near another on the CPU- that did the job.

Anyway- use port forwarding for ports your game needs, try not to use P2P applications when playing (both generate a lot of connections and basically there are no routers that work with over 1000 connections active). Also try to upgrade firmware as there may an issue with it (i.e. sth puts a lot of load on CPU)

I'm afraid Broadcom CPUs are just let's say "warm" in general. My AR7 211MHz (also ADSL- WAG200G) is a LOT cooler that my Broadcom was even at 200MHz (even though Broadcom hasn't been integrated with ADSL modem)

To test and see if it's overheating, put a fan blowing over the router (like a desk fan or something that moves a lot of air). If the connections stay more stable, then you know it's overheating. If not, then there's another issue. Make sure there's ventilation around the router... it's just like your computer. It's even more powerful of a computer than a lot of 486 desktop computers were.